XSS in GNOME Epiphany
CVE-2021-45085
XSS can occur in GNOME Web (aka Epiphany) before 40.4 and 41.x before 41.1 via an about: page, as demonstrated by ephy-about:overview when a user visits an XSS payload page often enough to place that page on the Most Visited list.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.015 (73.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 73rd percentile — 73.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.015 · newest: 0.015 · change: 0.000
Affected products
- GNOME Epiphany
- Debian Linux — versions 10.0, 11.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- gitlab.gnome.org/GNOME/epiphany/-/issues/1612 (Exploit, Vendor Advisory)
- gitlab.gnome.org/GNOME/epiphany/-/merge_requests/1045 (Patch, Vendor Advisory)
- www.debian.org/security/2022/dsa-5042 (vendor-advisory, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2022/08/msg00006.html (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-45085?
- CVE-2021-45085 is a medium-severity vulnerability in GNOME Epiphany, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-12-16.
- How severe is CVE-2021-45085?
- Medium severity. CVSS v3 base score is 6.1 out of 10.
- Is CVE-2021-45085 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.